CVE-2024-23480: A fallback mechanism in code sign checking on macOS may allow arbitrary code execution

Q: How do I fix CVE-2024-23480?

client connector: upgrade to 4.2. Exact commands for each OS are on this page.

Q: Is CVE-2024-23480 being exploited?

CVE-2024-23480 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2024-23480 affect?

CVE-2024-23480 affects client connector. Severity is high (CVSS 7.5). A fallback mechanism in code sign checking on macOS may allow arbitrary code execution. This issue affects Zscaler Client Connector on MacOS prior to 4.2.

Routine

HIGH 7.5UPGRADE

CVE-2024-23480 is a high-severity flaw (CVSS 7.5) affecting client connector. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A fallback mechanism in code sign checking on macOS may allow arbitrary code execution. This issue affects Zscaler Client Connector on MacOS prior to 4.2.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Local
Attack complexity	High
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.3% (top 77%)
CISA exploited list	No
Weakness	CWE-347
Published	2024-05-01
Last modified	2026-06-17

Publisher (CNA): Zscaler, Inc. · Vendor: zscaler

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2024-05-01 17:15 UTCPublished CVE record published
2026-06-17 07:13 UTCUpdated Record last modified

zscaler client connector UPGRADE

Affected: < 4.2

Fixed in: 4.2

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy client-connector || rpm -q client-connector || client-connector --version

2. UPGRADE to 4.2 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade client-connector

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade client-connector

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2024-23480?

client connector: upgrade to 4.2. Exact commands for each OS are on this page.

Is CVE-2024-23480 being exploited?

CVE-2024-23480 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2024-23480 affect?

CVE-2024-23480 affects client connector. Severity is high (CVSS 7.5). A fallback mechanism in code sign checking on macOS may allow arbitrary code execution. This issue affects Zscaler Client Connector on MacOS prior to 4.2.

How urgent is CVE-2024-23480?

Priority 32/100. High severity

Software pages

macOS vulnerabilities

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References

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